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1 a96b68b7 Fabrice Bellard
/*
2
 * PCM codecs
3 ff4ec49e Fabrice Bellard
 * Copyright (c) 2001 Fabrice Bellard.
4 a96b68b7 Fabrice Bellard
 *
5 ff4ec49e Fabrice Bellard
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9 a96b68b7 Fabrice Bellard
 *
10 ff4ec49e Fabrice Bellard
 * This library is distributed in the hope that it will be useful,
11 a96b68b7 Fabrice Bellard
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ff4ec49e Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14 a96b68b7 Fabrice Bellard
 *
15 ff4ec49e Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 a96b68b7 Fabrice Bellard
 */
19 115329f1 Diego Biurrun
20 1ab3d669 Michael Niedermayer
/**
21
 * @file pcm.c
22
 * PCM codecs
23
 */
24 115329f1 Diego Biurrun
25 a96b68b7 Fabrice Bellard
#include "avcodec.h"
26 b461b3bc Reimar Döffinger
#include "bitstream.h" // for ff_reverse
27 a96b68b7 Fabrice Bellard
28
/* from g711.c by SUN microsystems (unrestricted use) */
29
30 bb270c08 Diego Biurrun
#define         SIGN_BIT        (0x80)      /* Sign bit for a A-law byte. */
31
#define         QUANT_MASK      (0xf)       /* Quantization field mask. */
32
#define         NSEGS           (8)         /* Number of A-law segments. */
33
#define         SEG_SHIFT       (4)         /* Left shift for segment number. */
34
#define         SEG_MASK        (0x70)      /* Segment field mask. */
35 a96b68b7 Fabrice Bellard
36 bb270c08 Diego Biurrun
#define         BIAS            (0x84)      /* Bias for linear code. */
37 a96b68b7 Fabrice Bellard
38
/*
39
 * alaw2linear() - Convert an A-law value to 16-bit linear PCM
40
 *
41
 */
42 bb270c08 Diego Biurrun
static int alaw2linear(unsigned char a_val)
43 a96b68b7 Fabrice Bellard
{
44 bb270c08 Diego Biurrun
        int t;
45
        int seg;
46 a96b68b7 Fabrice Bellard
47 bb270c08 Diego Biurrun
        a_val ^= 0x55;
48 a96b68b7 Fabrice Bellard
49 bb270c08 Diego Biurrun
        t = a_val & QUANT_MASK;
50
        seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;
51
        if(seg) t= (t + t + 1 + 32) << (seg + 2);
52
        else    t= (t + t + 1     ) << 3;
53 cd1f22f9 Michael Niedermayer
54 bb270c08 Diego Biurrun
        return ((a_val & SIGN_BIT) ? t : -t);
55 a96b68b7 Fabrice Bellard
}
56
57 bb270c08 Diego Biurrun
static int ulaw2linear(unsigned char u_val)
58 a96b68b7 Fabrice Bellard
{
59 bb270c08 Diego Biurrun
        int t;
60 a96b68b7 Fabrice Bellard
61 bb270c08 Diego Biurrun
        /* Complement to obtain normal u-law value. */
62
        u_val = ~u_val;
63 a96b68b7 Fabrice Bellard
64 bb270c08 Diego Biurrun
        /*
65
         * Extract and bias the quantization bits. Then
66
         * shift up by the segment number and subtract out the bias.
67
         */
68
        t = ((u_val & QUANT_MASK) << 3) + BIAS;
69
        t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;
70 a96b68b7 Fabrice Bellard
71 bb270c08 Diego Biurrun
        return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
72 a96b68b7 Fabrice Bellard
}
73
74
/* 16384 entries per table */
75 0c1a9eda Zdenek Kabelac
static uint8_t *linear_to_alaw = NULL;
76 a96b68b7 Fabrice Bellard
static int linear_to_alaw_ref = 0;
77
78 0c1a9eda Zdenek Kabelac
static uint8_t *linear_to_ulaw = NULL;
79 a96b68b7 Fabrice Bellard
static int linear_to_ulaw_ref = 0;
80
81 115329f1 Diego Biurrun
static void build_xlaw_table(uint8_t *linear_to_xlaw,
82 a96b68b7 Fabrice Bellard
                             int (*xlaw2linear)(unsigned char),
83 115329f1 Diego Biurrun
                             int mask)
84 a96b68b7 Fabrice Bellard
{
85
    int i, j, v, v1, v2;
86
87
    j = 0;
88
    for(i=0;i<128;i++) {
89
        if (i != 127) {
90
            v1 = xlaw2linear(i ^ mask);
91
            v2 = xlaw2linear((i + 1) ^ mask);
92
            v = (v1 + v2 + 4) >> 3;
93
        } else {
94
            v = 8192;
95
        }
96
        for(;j<v;j++) {
97
            linear_to_xlaw[8192 + j] = (i ^ mask);
98
            if (j > 0)
99
                linear_to_xlaw[8192 - j] = (i ^ (mask ^ 0x80));
100
        }
101
    }
102
    linear_to_xlaw[0] = linear_to_xlaw[1];
103
}
104
105 cd4af68a Zdenek Kabelac
static int pcm_encode_init(AVCodecContext *avctx)
106 a96b68b7 Fabrice Bellard
{
107
    avctx->frame_size = 1;
108
    switch(avctx->codec->id) {
109
    case CODEC_ID_PCM_ALAW:
110
        if (linear_to_alaw_ref == 0) {
111 6000abfa Fabrice Bellard
            linear_to_alaw = av_malloc(16384);
112 a96b68b7 Fabrice Bellard
            if (!linear_to_alaw)
113
                return -1;
114
            build_xlaw_table(linear_to_alaw, alaw2linear, 0xd5);
115
        }
116
        linear_to_alaw_ref++;
117
        break;
118
    case CODEC_ID_PCM_MULAW:
119
        if (linear_to_ulaw_ref == 0) {
120 6000abfa Fabrice Bellard
            linear_to_ulaw = av_malloc(16384);
121 a96b68b7 Fabrice Bellard
            if (!linear_to_ulaw)
122
                return -1;
123
            build_xlaw_table(linear_to_ulaw, ulaw2linear, 0xff);
124
        }
125
        linear_to_ulaw_ref++;
126
        break;
127
    default:
128
        break;
129
    }
130 115329f1 Diego Biurrun
131 359fa0fe Michael Niedermayer
    switch(avctx->codec->id) {
132 b461b3bc Reimar Döffinger
    case CODEC_ID_PCM_S32LE:
133
    case CODEC_ID_PCM_S32BE:
134
    case CODEC_ID_PCM_U32LE:
135
    case CODEC_ID_PCM_U32BE:
136
        avctx->block_align = 4 * avctx->channels;
137
        break;
138
    case CODEC_ID_PCM_S24LE:
139
    case CODEC_ID_PCM_S24BE:
140
    case CODEC_ID_PCM_U24LE:
141
    case CODEC_ID_PCM_U24BE:
142
    case CODEC_ID_PCM_S24DAUD:
143
        avctx->block_align = 3 * avctx->channels;
144
        break;
145 359fa0fe Michael Niedermayer
    case CODEC_ID_PCM_S16LE:
146
    case CODEC_ID_PCM_S16BE:
147
    case CODEC_ID_PCM_U16LE:
148
    case CODEC_ID_PCM_U16BE:
149
        avctx->block_align = 2 * avctx->channels;
150
        break;
151
    case CODEC_ID_PCM_S8:
152
    case CODEC_ID_PCM_U8:
153
    case CODEC_ID_PCM_MULAW:
154
    case CODEC_ID_PCM_ALAW:
155
        avctx->block_align = avctx->channels;
156
        break;
157
    default:
158
        break;
159
    }
160
161 492cd3a9 Michael Niedermayer
    avctx->coded_frame= avcodec_alloc_frame();
162
    avctx->coded_frame->key_frame= 1;
163 115329f1 Diego Biurrun
164 a96b68b7 Fabrice Bellard
    return 0;
165
}
166
167 cd4af68a Zdenek Kabelac
static int pcm_encode_close(AVCodecContext *avctx)
168 a96b68b7 Fabrice Bellard
{
169 492cd3a9 Michael Niedermayer
    av_freep(&avctx->coded_frame);
170
171 a96b68b7 Fabrice Bellard
    switch(avctx->codec->id) {
172
    case CODEC_ID_PCM_ALAW:
173
        if (--linear_to_alaw_ref == 0)
174 6000abfa Fabrice Bellard
            av_free(linear_to_alaw);
175 a96b68b7 Fabrice Bellard
        break;
176
    case CODEC_ID_PCM_MULAW:
177
        if (--linear_to_ulaw_ref == 0)
178 6000abfa Fabrice Bellard
            av_free(linear_to_ulaw);
179 a96b68b7 Fabrice Bellard
        break;
180
    default:
181
        /* nothing to free */
182
        break;
183
    }
184
    return 0;
185
}
186
187 b461b3bc Reimar Döffinger
/**
188
 * \brief convert samples from 16 bit
189
 * \param bps byte per sample for the destination format, must be >= 2
190
 * \param le 0 for big-, 1 for little-endian
191 6c0d6064 Reimar Döffinger
 * \param us 0 for signed, 1 for unsigned output
192 b461b3bc Reimar Döffinger
 * \param samples input samples
193
 * \param dst output samples
194
 * \param n number of samples in samples buffer.
195
 */
196
static inline void encode_from16(int bps, int le, int us,
197
                               short **samples, uint8_t **dst, int n) {
198
    if (bps > 2)
199
        memset(*dst, 0, n * bps);
200
    if (le) *dst += bps - 2;
201
    for(;n>0;n--) {
202
        register int v = *(*samples)++;
203
        if (us) v += 0x8000;
204
        (*dst)[le] = v >> 8;
205
        (*dst)[1 - le] = v;
206
        *dst += bps;
207
    }
208
    if (le) *dst -= bps - 2;
209
}
210
211 cd4af68a Zdenek Kabelac
static int pcm_encode_frame(AVCodecContext *avctx,
212 bb270c08 Diego Biurrun
                            unsigned char *frame, int buf_size, void *data)
213 a96b68b7 Fabrice Bellard
{
214
    int n, sample_size, v;
215
    short *samples;
216
    unsigned char *dst;
217
218
    switch(avctx->codec->id) {
219 b461b3bc Reimar Döffinger
    case CODEC_ID_PCM_S32LE:
220
    case CODEC_ID_PCM_S32BE:
221
    case CODEC_ID_PCM_U32LE:
222
    case CODEC_ID_PCM_U32BE:
223
        sample_size = 4;
224
        break;
225
    case CODEC_ID_PCM_S24LE:
226
    case CODEC_ID_PCM_S24BE:
227
    case CODEC_ID_PCM_U24LE:
228
    case CODEC_ID_PCM_U24BE:
229
    case CODEC_ID_PCM_S24DAUD:
230
        sample_size = 3;
231
        break;
232 a96b68b7 Fabrice Bellard
    case CODEC_ID_PCM_S16LE:
233
    case CODEC_ID_PCM_S16BE:
234
    case CODEC_ID_PCM_U16LE:
235
    case CODEC_ID_PCM_U16BE:
236
        sample_size = 2;
237
        break;
238
    default:
239
        sample_size = 1;
240
        break;
241
    }
242
    n = buf_size / sample_size;
243
    samples = data;
244
    dst = frame;
245
246
    switch(avctx->codec->id) {
247 b461b3bc Reimar Döffinger
    case CODEC_ID_PCM_S32LE:
248
        encode_from16(4, 1, 0, &samples, &dst, n);
249
        break;
250
    case CODEC_ID_PCM_S32BE:
251
        encode_from16(4, 0, 0, &samples, &dst, n);
252
        break;
253
    case CODEC_ID_PCM_U32LE:
254
        encode_from16(4, 1, 1, &samples, &dst, n);
255
        break;
256
    case CODEC_ID_PCM_U32BE:
257
        encode_from16(4, 0, 1, &samples, &dst, n);
258
        break;
259
    case CODEC_ID_PCM_S24LE:
260
        encode_from16(3, 1, 0, &samples, &dst, n);
261
        break;
262
    case CODEC_ID_PCM_S24BE:
263
        encode_from16(3, 0, 0, &samples, &dst, n);
264
        break;
265
    case CODEC_ID_PCM_U24LE:
266
        encode_from16(3, 1, 1, &samples, &dst, n);
267
        break;
268
    case CODEC_ID_PCM_U24BE:
269
        encode_from16(3, 0, 1, &samples, &dst, n);
270
        break;
271
    case CODEC_ID_PCM_S24DAUD:
272
        for(;n>0;n--) {
273
            uint32_t tmp = ff_reverse[*samples >> 8] +
274
                           (ff_reverse[*samples & 0xff] << 8);
275
            tmp <<= 4; // sync flags would go here
276
            dst[2] = tmp & 0xff;
277
            tmp >>= 8;
278
            dst[1] = tmp & 0xff;
279
            dst[0] = tmp >> 8;
280
            samples++;
281
            dst += 3;
282
        }
283
        break;
284 a96b68b7 Fabrice Bellard
    case CODEC_ID_PCM_S16LE:
285
        for(;n>0;n--) {
286
            v = *samples++;
287
            dst[0] = v & 0xff;
288
            dst[1] = v >> 8;
289
            dst += 2;
290
        }
291
        break;
292
    case CODEC_ID_PCM_S16BE:
293
        for(;n>0;n--) {
294
            v = *samples++;
295
            dst[0] = v >> 8;
296
            dst[1] = v;
297
            dst += 2;
298
        }
299
        break;
300
    case CODEC_ID_PCM_U16LE:
301
        for(;n>0;n--) {
302
            v = *samples++;
303
            v += 0x8000;
304
            dst[0] = v & 0xff;
305
            dst[1] = v >> 8;
306
            dst += 2;
307
        }
308
        break;
309
    case CODEC_ID_PCM_U16BE:
310
        for(;n>0;n--) {
311
            v = *samples++;
312
            v += 0x8000;
313
            dst[0] = v >> 8;
314
            dst[1] = v;
315
            dst += 2;
316
        }
317
        break;
318
    case CODEC_ID_PCM_S8:
319
        for(;n>0;n--) {
320
            v = *samples++;
321 0eaec105 Nikolai Zhubr
            dst[0] = v >> 8;
322 a96b68b7 Fabrice Bellard
            dst++;
323
        }
324
        break;
325
    case CODEC_ID_PCM_U8:
326
        for(;n>0;n--) {
327
            v = *samples++;
328 0eaec105 Nikolai Zhubr
            dst[0] = (v >> 8) + 128;
329 a96b68b7 Fabrice Bellard
            dst++;
330
        }
331
        break;
332
    case CODEC_ID_PCM_ALAW:
333
        for(;n>0;n--) {
334
            v = *samples++;
335
            dst[0] = linear_to_alaw[(v + 32768) >> 2];
336
            dst++;
337
        }
338
        break;
339
    case CODEC_ID_PCM_MULAW:
340
        for(;n>0;n--) {
341
            v = *samples++;
342
            dst[0] = linear_to_ulaw[(v + 32768) >> 2];
343
            dst++;
344
        }
345
        break;
346
    default:
347
        return -1;
348
    }
349 13a0314f Philip Gladstone
    //avctx->frame_size = (dst - frame) / (sample_size * avctx->channels);
350 4c3d2e5f Philip Gladstone
351 a96b68b7 Fabrice Bellard
    return dst - frame;
352
}
353
354
typedef struct PCMDecode {
355
    short table[256];
356
} PCMDecode;
357
358 cd4af68a Zdenek Kabelac
static int pcm_decode_init(AVCodecContext * avctx)
359 a96b68b7 Fabrice Bellard
{
360
    PCMDecode *s = avctx->priv_data;
361
    int i;
362
363
    switch(avctx->codec->id) {
364
    case CODEC_ID_PCM_ALAW:
365
        for(i=0;i<256;i++)
366
            s->table[i] = alaw2linear(i);
367
        break;
368
    case CODEC_ID_PCM_MULAW:
369
        for(i=0;i<256;i++)
370
            s->table[i] = ulaw2linear(i);
371
        break;
372
    default:
373
        break;
374
    }
375
    return 0;
376
}
377
378 b461b3bc Reimar Döffinger
/**
379
 * \brief convert samples to 16 bit
380
 * \param bps byte per sample for the source format, must be >= 2
381
 * \param le 0 for big-, 1 for little-endian
382 6c0d6064 Reimar Döffinger
 * \param us 0 for signed, 1 for unsigned input
383 b461b3bc Reimar Döffinger
 * \param src input samples
384
 * \param samples output samples
385
 * \param src_len number of bytes in src
386
 */
387
static inline void decode_to16(int bps, int le, int us,
388
                               uint8_t **src, short **samples, int src_len)
389
{
390
    register int n = src_len / bps;
391
    if (le) *src += bps - 2;
392
    for(;n>0;n--) {
393
        *(*samples)++ = ((*src)[le] << 8 | (*src)[1 - le]) - (us?0x8000:0);
394
        *src += bps;
395
    }
396
    if (le) *src -= bps - 2;
397
}
398
399 cd4af68a Zdenek Kabelac
static int pcm_decode_frame(AVCodecContext *avctx,
400 bb270c08 Diego Biurrun
                            void *data, int *data_size,
401
                            uint8_t *buf, int buf_size)
402 a96b68b7 Fabrice Bellard
{
403
    PCMDecode *s = avctx->priv_data;
404
    int n;
405
    short *samples;
406 0c1a9eda Zdenek Kabelac
    uint8_t *src;
407 a96b68b7 Fabrice Bellard
408
    samples = data;
409
    src = buf;
410
411 a8d02f2b Michael Niedermayer
    if(buf_size > AVCODEC_MAX_AUDIO_FRAME_SIZE/2)
412
        buf_size = AVCODEC_MAX_AUDIO_FRAME_SIZE/2;
413
414 a96b68b7 Fabrice Bellard
    switch(avctx->codec->id) {
415 b461b3bc Reimar Döffinger
    case CODEC_ID_PCM_S32LE:
416
        decode_to16(4, 1, 0, &src, &samples, buf_size);
417
        break;
418
    case CODEC_ID_PCM_S32BE:
419
        decode_to16(4, 0, 0, &src, &samples, buf_size);
420
        break;
421
    case CODEC_ID_PCM_U32LE:
422
        decode_to16(4, 1, 1, &src, &samples, buf_size);
423
        break;
424
    case CODEC_ID_PCM_U32BE:
425
        decode_to16(4, 0, 1, &src, &samples, buf_size);
426
        break;
427
    case CODEC_ID_PCM_S24LE:
428
        decode_to16(3, 1, 0, &src, &samples, buf_size);
429
        break;
430
    case CODEC_ID_PCM_S24BE:
431
        decode_to16(3, 0, 0, &src, &samples, buf_size);
432
        break;
433
    case CODEC_ID_PCM_U24LE:
434
        decode_to16(3, 1, 1, &src, &samples, buf_size);
435
        break;
436
    case CODEC_ID_PCM_U24BE:
437
        decode_to16(3, 0, 1, &src, &samples, buf_size);
438
        break;
439
    case CODEC_ID_PCM_S24DAUD:
440
        n = buf_size / 3;
441
        for(;n>0;n--) {
442
          uint32_t v = src[0] << 16 | src[1] << 8 | src[2];
443
          v >>= 4; // sync flags are here
444
          *samples++ = ff_reverse[(v >> 8) & 0xff] +
445
                       (ff_reverse[v & 0xff] << 8);
446
          src += 3;
447
        }
448
        break;
449 a96b68b7 Fabrice Bellard
    case CODEC_ID_PCM_S16LE:
450
        n = buf_size >> 1;
451
        for(;n>0;n--) {
452
            *samples++ = src[0] | (src[1] << 8);
453
            src += 2;
454
        }
455
        break;
456
    case CODEC_ID_PCM_S16BE:
457
        n = buf_size >> 1;
458
        for(;n>0;n--) {
459
            *samples++ = (src[0] << 8) | src[1];
460
            src += 2;
461
        }
462
        break;
463
    case CODEC_ID_PCM_U16LE:
464
        n = buf_size >> 1;
465
        for(;n>0;n--) {
466
            *samples++ = (src[0] | (src[1] << 8)) - 0x8000;
467
            src += 2;
468
        }
469
        break;
470
    case CODEC_ID_PCM_U16BE:
471
        n = buf_size >> 1;
472
        for(;n>0;n--) {
473
            *samples++ = ((src[0] << 8) | src[1]) - 0x8000;
474
            src += 2;
475
        }
476
        break;
477
    case CODEC_ID_PCM_S8:
478
        n = buf_size;
479
        for(;n>0;n--) {
480
            *samples++ = src[0] << 8;
481
            src++;
482
        }
483
        break;
484
    case CODEC_ID_PCM_U8:
485
        n = buf_size;
486
        for(;n>0;n--) {
487
            *samples++ = ((int)src[0] - 128) << 8;
488
            src++;
489
        }
490
        break;
491
    case CODEC_ID_PCM_ALAW:
492
    case CODEC_ID_PCM_MULAW:
493
        n = buf_size;
494
        for(;n>0;n--) {
495
            *samples++ = s->table[src[0]];
496
            src++;
497
        }
498
        break;
499
    default:
500
        return -1;
501
    }
502 0c1a9eda Zdenek Kabelac
    *data_size = (uint8_t *)samples - (uint8_t *)data;
503 a96b68b7 Fabrice Bellard
    return src - buf;
504
}
505
506
#define PCM_CODEC(id, name)                     \
507
AVCodec name ## _encoder = {                    \
508
    #name,                                      \
509
    CODEC_TYPE_AUDIO,                           \
510
    id,                                         \
511
    0,                                          \
512 bb270c08 Diego Biurrun
    pcm_encode_init,                            \
513
    pcm_encode_frame,                           \
514
    pcm_encode_close,                           \
515 a96b68b7 Fabrice Bellard
    NULL,                                       \
516
};                                              \
517
AVCodec name ## _decoder = {                    \
518
    #name,                                      \
519
    CODEC_TYPE_AUDIO,                           \
520
    id,                                         \
521
    sizeof(PCMDecode),                          \
522 bb270c08 Diego Biurrun
    pcm_decode_init,                            \
523 a96b68b7 Fabrice Bellard
    NULL,                                       \
524
    NULL,                                       \
525 cd4af68a Zdenek Kabelac
    pcm_decode_frame,                           \
526 ef9f7306 Måns Rullgård
}
527 a96b68b7 Fabrice Bellard
528 b461b3bc Reimar Döffinger
PCM_CODEC(CODEC_ID_PCM_S32LE, pcm_s32le);
529
PCM_CODEC(CODEC_ID_PCM_S32BE, pcm_s32be);
530
PCM_CODEC(CODEC_ID_PCM_U32LE, pcm_u32le);
531
PCM_CODEC(CODEC_ID_PCM_U32BE, pcm_u32be);
532
PCM_CODEC(CODEC_ID_PCM_S24LE, pcm_s24le);
533
PCM_CODEC(CODEC_ID_PCM_S24BE, pcm_s24be);
534
PCM_CODEC(CODEC_ID_PCM_U24LE, pcm_u24le);
535
PCM_CODEC(CODEC_ID_PCM_U24BE, pcm_u24be);
536
PCM_CODEC(CODEC_ID_PCM_S24DAUD, pcm_s24daud);
537 a96b68b7 Fabrice Bellard
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
538
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
539
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
540
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
541
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
542
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
543
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
544
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
545 cd4af68a Zdenek Kabelac
546
#undef PCM_CODEC